{"data":{"id":"us/40-cfr-63.7485","jurisdiction":"us","citation":"40 CFR 63.7485","heading":"Am I subject to this subpart?","body":"You are subject to this subpart if you own or operate an industrial, commercial, or institutional boiler or process heater as defined in § 63.7575 that is located at, or is part of, a major source of HAP, except as specified in § 63.7491. For purposes of this subpart, a major source of HAP is as defined in § 63.2, except that for oil and natural gas production facilities, a major source of HAP is as defined in § 63.7575.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES","Subpart DDDDD—National Emission Standards for Hazardous Air Pollutants for Major Sources: Industrial, Commercial, and Institutional Boilers and Process Heaters"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"d5192447e651409d0adfe297baf5d66b24a8dd7a0857ab3247c2b34ab6b37d48","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.7480","next":"us/40-cfr-63.7490"},"notice":"GroundRules: Original legal text. Not legal advice."}